2009 Eldis Autoquest / Sunseeker Sinks won't empty

Martin Nik

Hiya;

This is my first post so please treet me gently!

I have an Eldis Sunseeker 180 and the sinks are real slow to drain. With the main tank tap open or closed it takes an age. I am assumeing there is a blockage somewhere - could anyone point me in the direction to where this might be?

Thanks in advance,

Martin